Equivalent & Substitute Parts for 67WR1K Trimmer Potentiometer

Part Overview

The 67WR1K is a 1 kOhm, 0.5W through-hole trimmer potentiometer manufactured by TT Electronics/BI. This cermet-based component features top adjustment with PC pin termination and a 20-turn configuration. The product maintains active status in the market. Substitute parts may be required due to inventory constraints, manufacturing discontinuation, or specific application requirements such as RoHS compliance or alternative adjustment mechanisms.

Substiute Parts

67WR1K

TT Electronics/BIIn Stock: 247067WR1K Datasheet

Current PartRFQ

3296P-1-102

Bourns Inc.In Stock: 22863296P-1-102 Datasheet

MFR RecommendedRFQ

M64W102KB40

Vishay SpectrolIn Stock: 1554M64W102KB40 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 67WR1K is determined by the following critical parameters:

• Electrical Equivalence: Resistance value (1 kOhms), power rating (0.5W), tolerance (±10%), and temperature coefficient (±100ppm/°C) must match exactly
• Material Composition: Resistive material must be cermet
• Mechanical Compatibility: Through-hole mounting with PC pin termination is required
• Functional Parameters: Number of turns and adjustment type may vary within acceptable ranges for circuit tuning applications

The identified substitute parts meet all electrical and material requirements. Variations in turn count (20, 21, or 25 turns) and adjustment mechanism (top or side) represent functional alternatives that maintain electrical performance while offering different mechanical interfaces.

Parameter Comparison

Engineering Selection Recommendations

67WR1K (TT Electronics/BI): Select this part for applications where top-side adjustment access is required and RoHS compliance is not a design constraint. The 20-turn configuration provides standard tuning resolution.

3296P-1-102 (Bourns Inc.): This substitute offers side-adjustment access with a 25-turn configuration, providing finer tuning resolution. The sealed Trimpot® 3296 series design may offer enhanced environmental protection. Note that REACH compliance status differs from the main part.

M64W102KB40 (Vishay Spectrol): This substitute maintains top-adjustment compatibility with the main part and provides RoHS3 compliance for applications requiring regulatory adherence. The 21-turn configuration offers minimal deviation from the original specification. Dimensional tolerance is slightly larger than the main part.

Frequently Asked Questions (FAQ)

Q: Can the 3296P-1-102 be used as a direct replacement for the 67WR1K?

A: The 3296P-1-102 is electrically equivalent but features side adjustment instead of top adjustment. PCB layout and mechanical clearance must accommodate the side-adjustment mechanism. The 25-turn configuration provides finer tuning resolution than the original 20-turn design.

Q: What is the primary advantage of the M64W102KB40 substitute?

A: The M64W102KB40 maintains top-adjustment compatibility with the 67WR1K and provides RoHS3 compliance. This makes it suitable for applications subject to RoHS regulatory requirements. The 21-turn configuration closely matches the original specification.

Q: Are there dimensional differences between these parts?

A: Yes. The 67WR1K measures 0.375" x 0.195" (9.53mm x 4.95mm). The 3296P-1-102 measures 0.375" x 0.190" (9.53mm x 4.83mm), and the M64W102KB40 measures 0.382" x 0.197" (9.70mm x 5.00mm). Verify PCB footprint compatibility before substitution.

Q: Do all substitutes maintain the same electrical performance?

A: Yes. All three parts share identical resistance value (1 kOhms), power rating (0.5W), tolerance (±10%), temperature coefficient (±100ppm/°C), and resistive material (cermet). Electrical performance is equivalent across all options.

Q: What is the difference in turn count, and does it affect circuit operation?

A: The 67WR1K has 20 turns, the 3296P-1-102 has 25 turns, and the M64W102KB40 has 21 turns. Higher turn counts provide finer adjustment resolution but do not alter the final resistance value or electrical characteristics once tuned to the target value.

Q: Which substitute should be selected for new designs?

A: Selection depends on specific design requirements. For RoHS compliance, use M64W102KB40. For finer tuning resolution with sealed construction, use 3296P-1-102. For closest mechanical and functional match to the original, use M64W102KB40 with top adjustment.